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Leases Schedule of Lease Assets and Liabilities (Details) $ in Millions | Mar. 31, 2019 USD ($)
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Schedule of Lease Assets and Liabilities [Line Items] |  |
Operating Lease, Right-of-Use Asset | $ 703 | [1]
Current Operating Lease Liabilities | 213 | [2]
Noncurrent Operating Lease Liabilities | 494 | [3]
Total Operating Lease Liabilities | 707 |
Finance Lease, Right-of-Use Asset, Gross | 152 |
Finance Lease, Right-Of-Use Asset, Accumulated Depreciation | (38) |
Finance Lease, Liability | 126 |
Property, Plant and Equipment [Member] |  |
Schedule of Lease Assets and Liabilities [Line Items] |  |
Finance Lease, Right-of-Use Asset | 114 |
Short-term Debt [Member] |  |
Schedule of Lease Assets and Liabilities [Line Items] |  |
Finance Lease, Liability, Current | 43 |
Long-term Debt [Member] |  |
Schedule of Lease Assets and Liabilities [Line Items] |  |
Finance Lease, Liability, Noncurrent | $ 83 |
[1] | Included in other assets in the interim Condensed Consolidated Balance Sheet.
[2] | Included in accrued and other current liabilities in the interim Condensed Consolidated Balance Sheet.
[3] | Included in other noncurrent obligations in the interim Condensed Consolidated Balance Sheet.

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- Definition Present value of lessee's discounted obligation for lease payments from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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